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diff --git a/hw6/src/reflectanceParameter.cpp b/hw6/src/reflectanceParameter.cpp
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+/******************************************************************/
+/* This file is part of the homework assignments for CSCI-427/527 */
+/* at The College of William & Mary and authored by Pieter Peers. */
+/* No part of this file, whether altered or in original form, can */
+/* be distributed or used outside the context of CSCI-427/527     */
+/* without consent of either the College of William & Mary or     */
+/* Pieter Peers.                                                  */
+/******************************************************************/
+#include "reflectanceParameter.h"
+
+/******************************/
+/* scalarReflectanceParameter */
+/******************************/
+
+/////////////////
+// Constructor //
+/////////////////
+scalarReflectanceParameter::scalarReflectanceParameter(float value)
+{
+  _value = value;
+  _texture = nullptr;
+  _channel = 0.0f; 
+}
+
+
+scalarReflectanceParameter::scalarReflectanceParameter(const std::shared_ptr<const texture_base>& texture, unsigned int channel)
+{
+  _value = 0.0f;
+  _texture = texture;
+  _channel = channel;
+}
+
+
+scalarReflectanceParameter::scalarReflectanceParameter(const scalarReflectanceParameter& src)
+{
+  _value = src._value;
+  _texture = src._texture;
+  _channel = src._channel;
+}
+
+
+//////////////
+// Operator //
+//////////////
+scalarReflectanceParameter& scalarReflectanceParameter::operator=(const scalarReflectanceParameter& src)
+{
+  _assign(src);
+  return *this;
+}
+
+
+float scalarReflectanceParameter::operator()(const vec2d& textureCoord) const
+{
+  if(_texture) return (*_texture)(textureCoord)[_channel];
+  else return _value;
+}
+
+
+/////////////////////
+// Private Methods //
+/////////////////////
+void scalarReflectanceParameter::_assign(const scalarReflectanceParameter& src)
+{
+  _value = src._value;
+  _texture = src._texture;
+  _channel = src._channel;
+}
+
+
+void scalarReflectanceParameter::_swap(scalarReflectanceParameter& swp)
+{
+  std::swap(_value, swp._value);
+  std::swap(_texture, swp._texture);
+  std::swap(_channel, swp._channel);
+}
+
+
+
+/*****************************/
+/* colorReflectanceParameter */
+/*****************************/
+
+/////////////////
+// Constructor //
+/////////////////
+colorReflectanceParameter::colorReflectanceParameter(color value)
+{
+  _value = value;
+  _texture = nullptr;
+}
+
+
+colorReflectanceParameter::colorReflectanceParameter(const std::shared_ptr<const texture_base>& texture)
+{
+  _value = color(0.0f);
+  _texture = texture;
+}
+
+
+colorReflectanceParameter::colorReflectanceParameter(const colorReflectanceParameter& src)
+{
+  _value = src._value;
+  _texture = src._texture;
+}
+
+
+//////////////
+// Operator //
+//////////////
+colorReflectanceParameter& colorReflectanceParameter::operator=(const colorReflectanceParameter& src)
+{
+  _assign(src);
+  return *this;
+}
+
+
+color colorReflectanceParameter::operator()(const vec2d& textureCoord) const
+{
+  if(_texture) return (*_texture)(textureCoord);
+  else return _value;
+}
+
+
+/////////////////////
+// Private Methods //
+/////////////////////
+void colorReflectanceParameter::_assign(const colorReflectanceParameter& src)
+{
+  _value = src._value;
+  _texture = src._texture;
+}
+
+
+void colorReflectanceParameter::_swap(colorReflectanceParameter& swp)
+{
+  std::swap(_value, swp._value);
+  std::swap(_texture, swp._texture);
+}
+
+